title: Exhaustibility of pituitary thyrotropin pool in old age by repeated administration of thyrotropin releasing hormone.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D013972:Thyrotropin / Q000378:metabolism*; D013973:Thyrotropin-Releasing Hormone / Q000494:pharmacology*; D013974:Thyroxine / Q000097:blood; D014284:Triiodothyronine / Q000097:blood
chemical_list: D014284:Triiodothyronine; D013973:Thyrotropin-Releasing Hormone; D013972:Thyrotropin; D013974:Thyroxine